MR. CHANGGAO YANG (MD) – Dermatopathology (Pathology) Physician, NPI 1366435638
Dermatopathology (Pathology) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,584 PATHOLOGY in CA
Provider Addresses for MR. CHANGGAO YANG (MD)
3030 OLD RANCH PKWY
SUITE 430
SEAL BEACH, CA 907402765
Phone: (562) 799-8900
Fax: (562) 799-8901
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
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Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2005-12-21
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20051221000681 | I | Pathology | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 88313 | Special stained specimen slides to examine tissue including interpretation and report | 1,468 | 449 | $0 |
| 88185 | Flow cytometry technique for dna or cell analysis, each additional marker | 1,338 | 48 | $0 |
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 1,050 | 469 | $0 |
| 88344 | Special stained specimen slides to examine tissue, each multiplex procedure | 550 | 97 | $0 |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 546 | 59 | $0 |
Insurance plans in this area (ZIP 90740)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PATHOLOGY | CA | 88342 | Tissue or cell analysis by immunologic technique | 525 | 432 |
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